一个史上巨难解释的英语句子----不是高手勿进

一个史上巨难解释的英语句子----不是高手勿进
This situation changed when I received an email from Ms Griffith,my cluster（a group of dorms）dean（主任）,saying that a new female DC Rep was needed.DC Rep stands for Discipline Committee Representative.Sometimes boarding school students break serious rules,like using drugs,getting drunk or cheating in their studies.The punishments given to such students are determined by a DC Rep,a house counselor,two student representatives（代表）,the cluster president and the cluster dean.【I was really interested in becoming DC Rep for my cluster,Pine Knoll,but so were five other students.】We had to hold an election and Ms Griffith asked us to write speeches to be sent to everyone in Pine Knoll.
1、I was really interested in becoming DC Rep for my cluster,Pine Knoll,but so were five other students.1、分析这个句子的结构
2、Pine
3、请解释【】里的一个句子,里面的so 总觉得多余.